Square pole base



FIG. 1 is a front, top, perspective view of a square pole base showingmy new design;

FIG. 2 is a right side elevational view, the left side elevational viewbeing a mirror image thereof;

FIG. 3 is a top plan view; and,

FIG. 4 is a bottom plan view.

In the drawings, the broken lines illustrates environment that forms nopart of the claimed design.

CLAIM The ornamental design for a square pole base, as shown anddescribed.